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Confidence: Medium · Source: FCC ULS · As of 2026-09-14

NW4KU callsign genealogy

Currently held by Uthoff, Ryan W

The FCC publishes a previous_call_sign on every amateur license — a self-link to the licensee's prior callsign. Following those links produces the chain below.

Previous callsigns

Older callsigns held by NW4KU's current licensee, walking backwards.

  1. KK4WXRcancelled· E
    Uthoff, Ryan WTNgranted 2013-01-29cancelled 2013-12-13
  2. KK4LETcancelled· G
    Uthoff, Ryan WTNgranted 2012-08-20cancelled 2013-01-29

Successor callsigns

Callsigns held now by people who previously held NW4KU.

No current licensee on record previously held this callsign.

← Back to NW4KU License history →